NASA's Solar Dynamics Observatory observed a small prominence rose up above the sun, appeared to twist around for several hours, and then began to send some streams of plasma back into the sun (Jan. 3-4, 2018).

NASA's Solar Dynamics Observatory observed an elongated coronal hole (the darker area near the center) seeming to shape itself into a single, recognizable question mark over the period of one day (Dec. 21-22, 2017).

This image from NASA's Solar Dynamics Observatory shows A developing filament near the edge of the sun churned and twisted as the rotating sun brought it into clearer view over a day on Nov. 16-17, 2017.

This image from NASA's Solar Dynamics Observatory shows a broad coronal hole, the dominant feature this week on the sun on Nov. 7-9, 2017. It was easily recognizable as the dark expanse across the top of the sun and extending down in each side.

NASA's Solar Dynamics Observatory, observed three distinct active regions with towering arches above them rotated into view over a three-day period (Sept. 24-26, 2017). To give some sense of scale, the largest arches rose up many times the size of Earth.

NASA's Solar Dynamics Observatory observed a large sunspot, source of a powerful solar flare (an X 9.3) and a coronal mass ejection (Sept. 6, 2017). The flare was the largest solar flare of the last decade.